<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}</title>
</head>
<body>
    <header>
        <h1>Hello Test!</h1>
    </header>
    <main>{% block content %}{% endblock %}</main>
    <footer>
        <span>This msg is from test_base.html</span>
    </footer>
</body>
</html>